Abstract: Methods, devices, and systems for data monitoring are provided. In one aspect, a method of data monitoring, applicable to a magnetic resonance system, includes: obtaining radio frequency (RF) waveform information which is to be sent to an RF transmitting coil of the magnetic resonance system; extracting target waveform information within a current sliding window from the RF waveform information, with a current time point being located within the current sliding window; obtaining, based on the target waveform information, target magnetic flux densities corresponding to the current sliding window; and determining a current real-time specific absorption rate (SAR) based on the target magnetic flux densities.

Abstract: Examples of the present disclosure provide methods and devices for monitoring data and provide magnetic resonance systems. According to the examples of the present disclosure, RF waveform information which is to be sent to an RF transmitting coil of the magnetic resonance system is obtained, target waveform information within a current sliding window is extracted from the RF waveform information with a current time point being located within the current sliding window, target magnetic flux densities corresponding to the current sliding window are obtained based on the target waveform information, and a current real-time SAR is determined based on the target magnetic flux densities. Thereby, real time monitoring of the SAR can be achieved by software without additional hardware added into the magnetic resonance system, which reduces the cost of monitoring the SAR.